You're missing the point crab
No, Harry will have served with many other pilots in the AAC who had limited academic qualifications and very possibly a dodgy past - the AAC, up until recently, took Corporals into flying training and a significant number of them went on to be operational aircraft commanders before comissioning and becoming Officers.
I understand that you have to believe that two privately educated, well mannered, intelligent young men couldn't possibly have got in on their own merits but it happens every day to normal people with the bare minimum qualifications.